qmake project mode "problem"
Hi all, recently i’ve discovered that qmake can auto generate a Qt project file parsing a directory. i’e searched on web but didn’t find any tutorial, so some one can explain me how to do that?? i...
View ArticleLow FPS when integrating QTwith worldviz Vizard (Third party library based on...
First I want to explain a bit the system we are using. We have 8 projector rear projection system with projection arranged in 2X4 grid like this P P P P P P P P Top row is handled by one QuadroPlex...
View Articlehow to detect the character encoding of a web page programmatically ?
I want to get a web page source code by Qt or PyQt ,I know how to get the encoded source code ,then I need get the codec in order to convert it into plain text ,so the problem is how to detect the...
View ArticleHow to cast QSharedDataPointer
Hi ! How to dynamic_cast a QSharedDataPointer<Base> object into a QSharedDataPointer<Derived> object whitout loosing the reference counting from the Base object ? NB: Base...
View ArticleFailed to load platform plugin "ios"
I have compiled Qt 5.1 Beta for iOS myself following the instructions here: http://blog.qt.digia.com/blog/2013/03/05/qt-for-ios-preview/ The included demo builds and runs fine, but I have a problem...
View ArticleProblem with simple Class
Hi, I’m newbie in Qt, I’m created my own very simple class. And when I want to create some object of my class something goes wrong. I don’t know what’s going on. Probably I missed something in code....
View ArticleWhat is the common pattern to implement a selected region dragged by mouse ?
I am quite new on Qt, and I would like to implement a selection made by dragging with the mouse. What is the common pattern/logic to do it ? I have found a clear and nice example which used QRubberBand...
View ArticleНе отображается скороллбар у QGraphicsView
При выполнении следующего куска кода всё нормально, скорллбар есть QGraphicsScene* scene = new QGraphicsScene (this); scene->addRect(0,0,20,200); scene->addRect(800,0,20,200); но стоит...
View ArticleDeveloping iOS under Windows
Hi, Is there any possible solution how to develop in Qt 5 for iOS on OS Windows? Emulators like VMware and Virtual Box aren’t great friends with me, in Xcode I’m definitely lost and there is another...
View ArticleQSystemTrayIcon does not appear
QSystemTrayIcon does not appear This code QSTITrayIcon= new QSystemTrayIcon(this); QSTITrayIcon->setToolTip(this->windowTitle()); ...
View ArticleQt Creator Simple Survey
Hello, Usually I work as web developer.But now, I need to create a simple questionnaire in Qt Creator. This is news to me, and at the moment I don’t have a time to learn how to build app in qt. Can any...
View ArticleQHash problems from 4.8 to 5.0.2
Hello, I am trying to convert a project from 4.8 to 5.0.2 on Mac OS and I am getting this erros: 22:48:52: Configuration unchanged, skipping qmake step. 22:48:52: Starting:...
View ArticleProblems with compiling in Ubuntu.
Hello, ledies & gentlemen. My software kit is: Ubuntu 13.04., QT5.1.0.beta. Problems with gcc correct startig up (in Ubuntu the newest version gcc 4.7 is installed). In menu Tools/Options/Bild...
View ArticleDriver QMYSQL not load
I have problems with the MySQL driver. I use Qt 5.0.2 and Qt Creator 2.7.1 I compile the various as indicated in the documentation. After compilation, it has created liqsqlmysql.dylib and...
View Articleto capture image from video frame qml(Qt -5)
Hai, I am using video element from QtMultimedia(qml) to play video. How it is possible to capture a image from video frame in qml. Thank you
View ArticleSmooth Text Scrolling
Hi all, I’m looking to build a text scrolling app and I’m having a very bad performance animation. The animation isn’t smooth as it jumps like a rabbit… I really don’t understand why this simple...
View ArticleProviding access to LGPL terms on a embedded/distributed system
Hi all, just a quick license issue: As far as i understand the Qt LGPL terms, you have to provide (among many other things): a quick note about Qt LGPL, as in: “This program uses the Qt Library,...
View ArticleHow to get LAN ip Address
Hi, I am using the following code to get the ip address foreach (const QHostAddress &address, QNetworkInterface::allAddresses()) { ...
View Article[Solved]Create enum for qml
With the help of Q_PROPERTY, we could create property for qml what about enumerator?Is it possible to export the enumerator of c++ to qml side?
View Article[Solved] Qt Project - application depending on a DLL file
Hi all, i have a technical question about including some files into an executable project. I explain : i have a workspace which includes 2 projects. The project 1 is creating a dll (thanks to several...
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